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Old 09-14-2013, 07:41 PM   #1
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What is the proper size of gap in sheathing for ridge cap?


Hi folks

I'm working on a 10'x10' shed with a 4/12 gable roof. What is the ideal sized gap in the plywood at the ridge for the ridge cap vent? My target was 3" on each side, but I forgot to figure for the fascia board so I ended with a little more than 4" on each side to the ridge. Is this acceptable or do I need to nail in a small strip of plywood or take some other action?

Thanks in advance

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Old 09-14-2013, 10:03 PM   #2
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What is the proper size of gap in sheathing for ridge cap?


the gap should only be about 1 1/2" on each side. and kept back from the edge one truss spacing. where its a shed its not really needed if you have soffit venting and a gable end vent

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Old 09-15-2013, 12:54 PM   #3
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What is the proper size of gap in sheathing for ridge cap?


Ok so I messed up there. I do plan to have soffit venting and gable vents. Would you recommend just cutting a 4" strip for each side and completing the roof, or should I do something else?
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Old 09-15-2013, 06:53 PM   #4
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What is the proper size of gap in sheathing for ridge cap?


Quote:
Originally Posted by mklein49 View Post
I do plan to have soffit venting and gable vents.
With a ridge vent outlet.. soffit only for inlet works better.

Quote:
Would you recommend just cutting a 4" strip...
I'd recommend following the instructions with the ridge vent.

Last edited by TarheelTerp; 09-15-2013 at 07:18 PM.
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Old 09-15-2013, 09:08 PM   #5
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What is the proper size of gap in sheathing for ridge cap?


Way to wide a gap, now water can get in.
No need to gable vents of there's a ridge vent, in fact a gable vent will short circuit the ridge vent and make it useless.
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Old 09-16-2013, 03:29 PM   #6
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What is the proper size of gap in sheathing for ridge cap?


either way you only need 1 1/2" of space at the ridge per side. it sounds like you want 4" on both sides

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